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| | Aurora (astronomy) - Facts, Information, and Encyclopedia Reference article |
 | | One possibility is that electromagnetic waves are transduced into sound waves by objects in the vicinity of the observer, or directly influence the auditory senses of the observer. |
| | These auroral sounds have been likened to the sounds of the dawn chorus. |
| | Helsinki University of Technology has made examinations and recordings of these sounds and, according to the newspaper Kaleva, found that during bright high level polar aurorae, hums, rumbles and pops are registered. |
| www.startsurfing.com /encyclopedia/a/u/r/Aurora_(astronomy).html (2221 words) |
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